package Practice;

import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int x = scanner.nextInt();
        int y = scanner.nextInt();
        int z = scanner.nextInt();
        Sub sub = new Sub(x, y, z);
        System.out.println(sub.calculate());
    }
}
